NPPES file of Aug 9, 2026

Hematology & Oncology Physician in California

1,583 NPPES records list hematology & oncology physician with a practice address in California, 4.1 per 100,000 residents, the 19th highest rate of 51. Los Angeles and San Diego have the most; each record links to the provider's NPI and the California license search. Page 21 of 32.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RH0003X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Los Angeles has the most, 153

  1. Los Angeles153
  2. San Diego88
  3. Sacramento77
  4. San Francisco64
  5. Orange63

Hematology & Oncology Physician records in California

  1. Rima Nakrani, MDVallejo, CA 945891710547633
  2. Xinyu Nan, M.D.Orange, CA 928681326458175
  3. Andreea Nanci, MDCosta Mesa, CA 926271508813098
  4. Vir Nanda, MDVictorville, CA 923951386841963
  5. Raghu Nandan, M.DLakewood, CA 907121861463606
  6. Chaitali Nangia, MDCosta Mesa, CA 926271669425286
  7. Kiran Naqvi, M.D.Orange, CA 928681407881592
  8. Padma Narasimhan, M.D.El Monte, CA 917321821148990
  9. Roshni NarurkarLoma Linda, CA 923501457728396
  10. Madiha Naseem, MDBakersfield, CA 933011245734912
  11. Farah NasratyLa Jolla, CA 920371104244813
  12. Youram Nassir, MDLos Angeles, CA 900361114977071
  13. Rebecca Nayeri, M.D.Los Angeles, CA 900731063943140
  14. Amy Nelson, MDSan Francisco, CA 941151265510853
  15. Edward L Nelson, MDOrange, CA 928681780764951
  16. Vasyl Nesteryuk, DOTravis Afb, CA 945351851896732
  17. Jacob New, MDLa Jolla, CA 920371740800325
  18. Gregg Newman, M.D.Santa Barbara, CA 931051275645053
  19. Chun Ng, M.D.Stockton, CA 952101104057827
  20. Kim Ng, M.D.Victorville, CA 923951003803685
  21. Mark Ngo, M.D.Long Beach, CA 908131982623468
  22. Peter NgoLong Beach, CA 908131245626647
  23. An Nguyen, M.D.Huntington Beach, CA 926481023011384
  24. Anthony Nguyen, MDLa Jolla, CA 920931295153575
  25. Bichlien Nguyen, M.D.Fountain Valley, CA 927081417912239
  26. Danny Nguyen, M.D.Huntington Beach, CA 926481386960334
  27. Dorothy Nguyen, MDRedwood City, CA 940631013043280
  28. Hoa Nguyen, M.D.Marysville, CA 959011528083664
  29. Huy Nguyen, MDSunnyvale, CA 940861770659252
  30. Michael Nguyen, M.D.Torrance, CA 905051053846485
  31. Minh Nguyen, MDNewport Beach, CA 926631740316272
  32. Van Nguyen, M.D.Anaheim, CA 928061922442557
  33. Vinh-Linh Nguyen, MDBakersfield, CA 933061285603639
  34. Qaiser Niaz, MDHayward, CA 945451528056389
  35. Vincent Nicchi, MDLos Angeles, CA 900331467031492
  36. Jorge Nieva, M.D.Los Angeles, CA 900891497717672
  37. Yutaka Niihara, M.D.Torrance, CA 905021467480459
  38. Mina Nikanjam, MD PHDEncinitas, CA 920241073888657
  39. Joseph Nimoy, MDLos Angeles, CA 900341225105182
  40. Carol Nishikubo, M.D.Santa Monica, CA 904041023083888
  41. Wade Nishimoto, M.D.Los Angeles, CA 900451083641518
  42. Zorawar Noor, M.D., M.H.S.Irvine, CA 926041376802843
  43. Mahboub Noori, MDCastro Valley, CA 945461831695915
  44. Craig Norris, MDSan Diego, CA 921341538131289
  45. Marilyn Norton, MDChula Vista, CA 919111417060054
  46. Aileen Novero, M.D.Torrance, CA 905051154641421
  47. William Novotny, M.D.Palo Alto, CA 943041235207911
  48. Casey O'Connell, M.D.Los Angeles, CA 900891104039197
  49. Steven O'Day, M.D.Santa Monica, CA 904041518070812
  50. Robert O'Donnell, M.D., PH.D.Sacramento, CA 958171386627586

Source: CMS NPPES, primary taxonomy 207RH0003X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 19 of 51 per resident

  1. Ohio4.4
  2. New Jersey4.3
  3. Louisiana4.1
  4. California4.1
  5. Nebraska4.0
  6. Virginia4.0
  7. 50 states and D.C.4.2

Source: CMS NPPES, primary taxonomy 207RH0003X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

83.1% of these records appear in a Medicare file, against 82.9% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. California83.1%
  2. United States82.9%

Hematology & Oncology Physician records in California, measured

  • In a Medicare file1,315 of 1,583 · 83.1% here, 82.9% nationally
  • In the CMS Doctors and Clinicians file1,126 · 71.1% here, 71.3% nationally
  • Not updated in five years or more917 · 57.9% here, 54.3% nationally
  • Median graduation year2003 · the 1,124 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RH0003X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

1,583 NPPES records list hematology & oncology physician (207RH0003X) as their primary taxonomy with a practice address in California: 4.1 per 100,000 residents against 4.2 nationally (50 states and D.C.). Los Angeles has 153 of them (10%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. New York1,163
  2. Texas922
  3. Florida818
  4. Pennsylvania784

States with a similar rate per 100,000

  1. Nebraska4.0
  2. Louisiana4.1
  3. Virginia4.0
  4. North Carolina4.0

The largest states

  1. New York1,163
  2. Texas922
  3. Florida818
  4. Pennsylvania784
  5. Illinois666

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.